Journal of Tropical Oceanography ›› 2023, Vol. 42 ›› Issue (4): 1-11.doi: 10.11978/2022159CSTR: 32234.14.2022159

• Review •     Next Articles

Progress on the nitrogen-fixing microorganisms and their ecological functions in mangroves

DONG Junde1,2,3,4(), HUANG Xiaofang1,2,4,5, LONG Aimin1,5, WANG Youshao1,2,4, LING Juan1,2,4, YANG Qingsong1,2,4   

  1. 1. South China Sea Institute of Oceanology, Chinese Academy of Sciences, CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Applied Marine Biology, Guangzhou 510301, China
    2. Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
    3. Key Laboratory of Tropical Marine Biotechnology of Hainan Province, Sanya Institute of Ocean Eco-Environmental Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China
    4. Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 511458, China
    5. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-07-20 Revised:2022-08-15 Online:2023-07-10 Published:2022-08-16
  • Supported by:
    Key Special Project for Exotic Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0402); Science and Technology Planning Project of Guangdong Province, China(2020B1212060058); Science and Technology Planning Project of Guangdong Province, China(2021B1212050023); Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences(ISEE2021ZD03)

Abstract:

Microbial nitrogen fixation is a crucial part of nitrogen cycling in mangrove ecosystems, it plays an essential role in the nitrogen nutrient supply and primary productivity improvement of ecosystem. This paper reviewed the diazotrophic community structure, nitrogen fixation rate, and the main measurement methods of nitrogen fixation in mangrove ecosystems. We also explored the application of nitrogen-fixing microorganisms in mangrove restoration and the ecological indicators of nitrogen-fixing microorganisms for mangrove habitats, emphasized the vital roles of diazotrophs in coupling carbon, nitrogen, and sulfur cycles in mangrove wetlands, and highlighted new perspectives for nitrogen-fixing microorganisms in the mangrove ecosystem.

Key words: mangrove, microbial nitrogen fixation, nitrogen fixation rate, ecological restoration